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In 1892 Tesla began working with experimenting with electromagnetic radiation in photographs. It is said that Tesla took the first X-ray while taking a picture of Mark Twain, who was a personal friend of his. During this time Tesla's lab in New York City was destroyed in a fire, burning all of his work and notes.
Shortly after Wilhelm Conrad Roentgen published his discovery of X-rays on November 8, 1895 Tesla sent his images to Roentgen. Although Tesla gave Roentgen full credit for the finding, Roentgen congratulated Tesla on his sophisticated images, wondering how he had achieved such impressive results.
A popular radiographic organization today says: "We will never know who would have gotten the Nobel prize for the discovery of x-rays had Tesla’s work not been lost together with his New York laboratory. The least we can do is appreciate Tesla’s pioneer work in the invention and application of x-rays. ".